Twitter/Facebook/Tumblr count down characters is hidden by the picture of the post
limit ShareablesFromPerson queries to improve performance
update changelog
Merge pull request #3963 from movilla/publisher_counter

Twitter/Facebook/Tumblr count down characters is hidden by the picture of the post. Close #3956
Merge pull request #3968 from marpo60/limit_shareable_from_person_queries

limit ShareablesFromPerson queries to improve performance